Azotizing

from The Collaborative International Dictionary of English v.0.48

Azotize \Az"o*tize\, v. t. [imp. & p. p. {Azotized} (?); p. pr.
   & vb. n. {Azotizing} (?).]
   To impregnate with azote, or nitrogen; to nitrogenize.
   [1913 Webster]